Respuesta :

Answer:

You add common factors

Step-by-step explanation:

-3x^3 is the only x^3

5x^2 and -6x^2 can be added to get -x^2

4x and 2x can be added to get 6x

-7 and -3 can be added to get -10

the answer is -3x^3-x^2+6x-10

Answer:

6x-21

Step-by-step explanation:

(4x-9+10-7)+(2x-12-3) simplify the sum (-3×3+5×2+4×-7)+(-6×2+2+3) then (4x-9+10-7) simplify the sum -3×3+5×2+4×-7

9 multiply 3×3

10 multiply 5 and 2

(2×-12-3) multiply 6 and 2

(4x-6)+(2x-15) simplify the sum (4×-9+10-7)

(2× x-12-3)

(4x-6) add -9, 10 and -7 (2x-15) add -12 and -3

4x-6+2x-15 simplify the sum (4× x-6)+(2×-15)

4x-6 get ride of unnecessary parentheses for (4×-6)

2x-15 get ride of unnecessary parentheses for (2×x-15)

6x add 4× x and 2× x

21

add -6 and -15

6x-21

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